LNG罐箱运输船罐箱水运破损概率

The Rupture Probability of LNG Tank Container in Marine Transport

为定量分析天然气罐箱运输的安全性,使用有限元计算软件ANSYS模拟液化天然气(Liquefied Natural Gas,LNG)罐箱运输船和C型破损舱天然气运输船的碰撞过程。通过一系列算例得到不同尺度的天然气罐箱运输船和C型舱天然气运输船储罐临界能量的计算公式。基于长江实际船舶通航情况,设计蒙特卡洛法计算程序,对不同区段的C型舱天然气运输船和天然气罐箱运输船的储罐破损概率进行计算,比较在不同装载要求下天然气储罐的安全性。利用该研究成果可对我国天然气罐箱运输的装载标准进行修正,控制天然气罐箱运输中的安全风险。

The safety of LNG(Liquefied Natural Gas)tank container in transport at sea is quantitatively analyzed with finite element method.The collision process of LNG tank container ship and C-type tank LNG carrier are simulated.Critical energy formulas for LNG tank container and C-type tank LNG carrier are obtained through a series of FEM calculation and interpolation.A Monte Carlo scheme is designed to find out the LNG tank rupture probabilities of the two kinds of ships in different scales according to the actual ship navigation data in Yangtze River.The rupture probabilities of LNG in different loading conditions are compared.The study is for the revision of the loading standard,controlling transportation risk of LNG tank container at sea.